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第 4 期 郑占模, 等: 二氧化硅纳米颗粒协同碳纤维增强复合材料防滑和耐磨性能研究 605
(a1) Pure TPU (b1) SiO 2 NPs/TPU (c1) SiO 2 NPs/CF/TPU
F F F
Water Water Water
ZrO 2 ZrO 2 ZrO 2
Hydrophilic surface Hydrophobic surface Hydrophobic surface
(a2) (b2) (c2)
Water ZrO 2 ZrO 2 ZrO 2
lubricating film Meshing Meshing
Asperity
SiO 2 SiO 2
CF
V V V
TPU Composite Composite
(a3) Friction (b3) Friction (c3) Friction
Ripple deformation Exfoliation Crack Filled CF
Debris
TPU Composite Composite
(d1) (d2) Debonding Matrix
External stress and pull out crack
Fiber
Crack propagation direction
Matrix Crack
crack Fracture briding
τ Crack
tip processing zone
Crack tip
Fiber
Breaking Crack Crack break
briding τ pinning
Debonding 20 μm
and pull out External stress
Fig. 10 Schematic diagram of the synergistically reinforcing effect of SiO 2 and CF on the antiskid and wear-resistant properties of
TPU composites: (a) pure TPU; (b) SiO 2 NPs/TPU; (c) SiO 2 NPs/CF/TPU; (d) the toughening mechanisms of CF
图 10 SiO 2 NPs与CF协同增强TPU基复合材料防滑性能与耐磨性能的机理图:(a)纯TPU;
(b) SiO 2 NPs/TPU;(c) SiO 2 NPs/CF/TPU;(d) CF的增韧机理
[ 3 ] Bian Guangyu, Wu Houzheng. Friction performance of
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